. >> president george w. bush has undergone successful surgery at a dallas hospital today. that surgery was needed to place a stent in the heart of the 67-year-old former president. doctors discovered a blockage in the president's heart during a routine physical yesterday. he is expected to return home tomorrow and resume his normal schedule by thursday, and we wish him well, of course. >>> u.s. air force transport planes have landed and taken off again from yemen after picking up americans living in that country. that includes embassy personnel. the state department order evacuations for all non-essential staff to leave yemen in the wake of the terror warnings that have forced closures of u.s. embassies throughout the middle east and africa. intelligence sources say the extra security measures were prompted after messages by al qaeda leaders were intercepted. ty? >> well, he is literally the man who wrote the book on media, actually several books. ken aletta wrote a book about the three networks that used to be known as the big three, and in some circles they still are, an